19971279

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{3121}}^1$

素因数の和:3212

約数の個数: 20

約数和(自身を含む): 30220960

約数和(自身を除く): 10249681

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 3121, 6399, 9363, 28089, 84267, 246559, 252801, 739677, 2219031, 6657093, 19971279]

約数ペア:

[(1, 19971279), (3, 6657093), (9, 2219031), (27, 739677), (79, 252801), (81, 246559), (237, 84267), (711, 28089), (2133, 9363), (3121, 6399)]